The ETS Stock Turbo Intake System utilizes a stock size MAF housing that doesn't require any retuning. You can bolt this on and notice immediate performance gains! ETS intake also utilizes a custom billet 5" velocity stack to help funnel as much air as quickly as possible through ETS intake. This combined with a huge K&N filter gives us the most filter surface area and flow possible. The filter is specifically placed to allow the use of the factory ram air duct. If you want to keep things looking stealthy under the hood ETS also have an airbox available as well (You can select this from the drop downs below). This helps to isolate the intake from the hot engine bay temps and provide the coldest and most direct intake charge. Backed by a lifetime warranty and the best customer service in the industry. You can buy this knowing it's going to fit and perform better than anything on the market.
We've designed ETS 2015+ WRX intake to work with the factory tune, but for maximum performance, ETS still recommend a pro tune.